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2020-03-06libcamera: control_serializer: Use zero-copy ByteStreamBuffer::read()Laurent Pinchart
Use the zero-copy variant of ByteStreamBuffer::read() to read packet headers and control entries. This enhances the performance of ControlList and ControlInfoMap deserialization. Deserialization of the actual ControlValue is untouched for now and will be optimized later. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.binghm@ideasonboard.com>
2020-03-06libcamera: control_serializer: Simplify serialization of ControlValueLaurent Pinchart
Use the ControlValue::data() function to access raw data stored in the control value and simplify serialization. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.binghm@ideasonboard.com>
2020-03-06libcamera: control_serializer: Use explicit ControlTypeNone caseLaurent Pinchart
Replace the default case with an explicit ControlTypeNone case in ControlSerializer::load() to catch omissions when adding new control types. A return statement needs to be added to the end of the function to avoid gcc incorrectly reporting that some exit paths don't contain a return statement. The compiler will still warn that not all cases are handled when adding a new control type. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: byte_stream_buffer: Add zero-copy read() variantLaurent Pinchart
Add a read() function to ByteStreamBuffer that returns a pointer to the data instead of copying it. Overflow check is still handled by the class, but the caller must check the returned pointer explicitly. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: byte_stream_buffer: Add Span<> supportJacopo Mondi
Add support to write and read a Span<> to and from the ByteStreamBuffer class. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: byte_stream_buffer: Fix documentation of read() and write()Jacopo Mondi
The documentation of the read() and write() functions refer to non existent 'size' and 'data' parameters in their brief. Fix them. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: ipa: Support array controls in ipa_control_value_entryLaurent Pinchart
Report in a new field of the ipa_control_value_entry structure if the value contains an array. Reorganize the other fields of the structure to avoid increasing its size. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Convert bool ControlValue to lowercase stringsLaurent Pinchart
The C++ boolean types are lower case, and std::ostream::operator<<(bool) produces a lowercase string (when std::boolalpha is in effect, otherwise it produces 0 or 1). Switch ControlValue::toString() to produce lowercase "true" and "false" strings too for consistency. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Add support for byte controlsJacopo Mondi
Add support for byte values to the control framework and to the control serializer. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Add support for float controlsJacopo Mondi
Add support for float values in Control<> and ControlValue classes. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Add a 'size' yaml propertyJacopo Mondi
Add a 'size' property to the control yaml description, to convey the size constraints of array controls. The semantics of the property contents is currently unspecified, but its presence triggers the generation of an array control (Control<Span<const T>>). Example: - BayerGains: type: float description: Gains to apply to the four Bayer colour components for white balance size: [4] Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Allow passing an std::initializer list to set()Laurent Pinchart
For array controls, the ControlList::set() function takes a value as a type convertible to Span<T>. This allows passing an std::array or an std::vector in addition to an explicit Span, but doesn't accept an std::initializer list as Span has no constructor that takes an initializer list. Callers are thus forced to create temporary objects explicitly, which isn't nice. Fix the issue by providing a ControlList::set() function that takes an std::initializer_list, and convert it to a Span internally. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Support array controls in ControlValueJacopo Mondi
Add array controls support to the ControlValue class. The polymorphic class can now store more than a single element and supports access and creation through the use of Span<>. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Expose raw data in ControlValueLaurent Pinchart
Add a data() function to the ControlValue class to expose the raw data stored by the class as a Span<const uint8_t>. This will be useful to simplify the serialization of ControlValue instances. The size computation for the raw data is moved from the ControlSerializer, which is updated accordingly to use the data() function in order to access the size. Simplification of the ControlSerializer will happen in a subsequent change. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Move Control constructor to controls.hLaurent Pinchart
To avoid defining all specializations of the Control constructor manually, move the definition of those functions to controls.h and turn them into a single template function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Move ControlValue constructor to controls.hLaurent Pinchart
To avoid defining all specializations of the ControlValue constructor manually, move the definition of those functions to controls.h and turn them into a single template function. The default constructor is still kept in controls.cpp. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Move ControlValue get() and set() to controls.hLaurent Pinchart
To avoid defining all specializations of ControlValue::get() and ControlValue::set() manually, move the definition of those functions to controls.h and turn them into single template functions. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Return control by valueLaurent Pinchart
The ControlList::get() and ControlValue::get() methods return the control value by reference. This requires the ControlValue class to store the control value in the same form as the one returned by those functions. For the array controls that are soon to be added, the ControlValue class would need to store a span<> instance in addition to the control value itself, which would increase the required storage space. Prepare for support of array controls by returning from get() by value. As all control values are 8 bytes at most, this doesn't affect efficiency negatively. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Decouple control and value type in ControlList::set()Laurent Pinchart
The ControlList::set() method takes a reference to a Control<T>, and requires the value to be a reference to T. This prevents the set() method from being used with value types that are convertible to T, and in particular with std::array or std::vector value types when the Control type is a Span<> to support array controls. Fix this by decoupling the control type and value type in the template parameters. The compiler will still catch invalid conversions, including cases where the constructor of type T from the value type is explicit. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Don't convert 32-bit and 64-bit implicitlyLaurent Pinchart
The ControlValue::get<T>() method verifies that the T type corresponds to the ControlValue type. It however accepts int32_t as a return type for 64-bit integer controls, and int64_t as a return type for 32-bit integer controls. There's no reason to do so anymore, make the type check stricter. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: controls: Reorder ControlValue methodsJacopo Mondi
Reorder functions in ControlValue class to group const methods together. Cosmetic change only. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: ipa: Test control structure size with static_assertLaurent Pinchart
The control-related structures ipa_controls_header, ipa_control_value_entry and ipa_control_range_entry define the IPA protocol and are thus part of the ABI. To avoid breaking it inadvertently, use static_assert() to check the size of the structures. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: ipa: Make <ipa/ipa_controls.h> self-containedLaurent Pinchart
The <ipa/ipa_controls.h> header makes use of uint*_t types, but doesn't include stdint.h. Fix it, and include ipa_controls.h in ipa_controls.cpp to test compilation of the header on its own. While at it, fix the comment as the top of ipa_controls.cpp to refer to the correct file name. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: ipa: Remove unused IPA control typesJacopo Mondi
The ipa_control_range_data structure is only used to document the IPA control serialization format, but isn't used in code at all as the ControlRange entries are directly serialized to a byte stream buffer. This applies to the ipa_control_value_data structure that is solely used by ipa_control_range_data. Expand the documentation of the IPA control serialization format to describe the layout of the control range data in words and diagrams instead of through a C structure. Remove the unused structures as a result. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-06libcamera: gen-controls: Fix documentation issue with <<Jacopo Mondi
Doxygen fails to parse entries with multiple << signs as, in example, \var extern const Control<Span<int32_t>> Remove the type from the control documentation as unique control and property names should not need any additional information specified for Doxygen to correctly identify them. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-02-24libcamera: ipa_manager: Search for IPA libraries in build treeKieran Bingham
When libcamera is built and tested (or used at all) before installing to the configured prefix path, it will be unable to locate the IPA binaries, or IPA binaries previously installed in the system paths may be incorrect to load. Utilise the build_rpath dynamic tag which is stripped out by meson at install time to determine at runtime if the library currently executing has been installed or not. When not installed and running from a build tree, identify the location of that tree by finding the path of the active libcamera.so itself, and from that point add a relative path to be able to load the most recently built IPA modules. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-02-24libcamera: ipa_manager: Allow recursive parsingKieran Bingham
Provide an optional means to recurse into subdirectories to search for IPA libraries. This allows IPAs contained within their own build directory to be found when loading from a non-installed build. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-02-24libcamera: ipa_manager: Simplify addDir() usageKieran Bingham
The addDir call only returns an error if it can't open the directory. Callers only care about the number of modules added, and discard any error information. Simplify the return value and calling code by returning an unsigned int of the number of modules loaded. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-02-24libcamera: ipa_manager: Re-arrange IPA precedenceKieran Bingham
Setting a user environment path in LIBCAMERA_IPA_MODULE_PATH should take precedence over the system loading locations. Adjust the IPA search orders accordingly. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-02-24libcamera: utils: Add a C++ dirname implementationKieran Bingham
Provide a std::string based implementation which conforms to the behaviour of the dirname() fucntion defined by POSIX. Tests are added to cover expected corner cases of the implementation. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-02-19qcam: Fix compilation errors with clang-10Laurent Pinchart
clang-10 has introduced the same deprecated-copy warning that appeared in gcc-9 and caused build issues with Qt header files. However, the clang version seems more sensitive, and detects issues that are not fixed in Qt 5.13, unlike gcc-9. Extend the logic that disables the warning for gcc-9 and Qt < 5.13 to cover clang-10 and all Qt versions. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-02-19qcam: Use standard PicturesLocation path for captureKieran Bingham
Utilise the QStandardPaths::PicturesLocation as a starting point for saving images from qcam. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-02-19libcamera: media_device: Use Loggable interfaceKieran Bingham
Extend MediaDevice to inherit from the Loggable interface to support a logPrefix which presents the device node path, and the driver name. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-02-19libcamera: media_device: prevent sign extension on castsKieran Bingham
The conversion of pointers to integers is implementation defined and differs between g++ and clang++ when utilising a uint64_t type. #include <iostream> int main(int argc, char **argv) { void *ptr = reinterpret_cast<void *>(0xf1234567); uint64_t u64 = reinterpret_cast<uint64_t>(ptr); uint64_t uint64 = reinterpret_cast<uintptr_t>(ptr); std::cout << "ptr " << ptr << " ptr -> u64 0x" << std::hex << u64 << " ptr -> uintptr_t -> u64 0x" << std::hex << uint64 << std::endl; return 0; } When compiled with g++ for a 32-bit platform produces the following unexpected output: ptr 0xf1234567 ptr -> u64 0xfffffffff1234567 ptr -> uintptr_t -> u64 0xf1234567 The standards states: "A pointer can be explicitly converted to any integral type large enough to hold all values of its type. The mapping function is implementation-defined. [Note: It is intended to be unsurprising to those who know the addressing structure of the underlying machine. — end note]" And as such the g++ implementation appears to be little more surprising than expected in this situation. The MediaDevice passes pointers to the kernel via the struct media_v2_topology in which pointers are cast using a uint64 type (__u64), which is affected by the sign extension described above when BIT(32) is set and causes an invalid address to be given to the kernel. Ensure that we cast using uintptr_t which is not affected by the sign extension issue. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-02-18libcamera: Use C++14 std::*_t type traitsLaurent Pinchart
C++14 introduced useful type traits helpers named std::*_t as aliases to std::*<...>::type. Use them to simplify the code. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-02-18libcamera: device_enumerator: Don't stop if one device failsLaurent Pinchart
If one device fails to enumerate, which isn't supposed to happen under normal conditions, both the sysfs and the udev enumerators stop enumeration of further devices. This potentially prevents working devices from being detected and handled. Fix it by skipping the faulty device. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-02-14android: camera_device: Use Camera properties for static MetadataJacopo Mondi
Construct two example static metadata to be reported to the Android framework using the properties reported by the Camera. Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-02-14libcamera: camera: Add Camera propertiesJacopo Mondi
Add a method to the Camera class to retrieve the Camera properties registered by the pipeline handler. While at it, reword the Camera::controls() operation documentation to specify that the camera control information are constant during the camera lifetime not their value, while the camera properties value are the actually static information. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-02-14libcamera: pipeline_handler: Add Camera propertiesJacopo Mondi
Associate to each Camera a ControlList which contains the Camera properties as created by pipeline handlers in the pipeline handler's CameraData and provide an operation to retrieve them. Collect properties from the camera sensor in all pipeline handlers that support one (IPU3, RKISP1 and VIMC). Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-02-14libcamera: camera_sensor: Parse camera propertiesJacopo Mondi
Parse and collect camera sensor properties by inspecting the associated v4l2 controls. Augment the CameraSensor class with an operation to retrieve the collected properties. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-02-14libcamera: controls: Add default to ControlRangeJacopo Mondi
Augment the the ControlRange class to store the control default value. This is particularly relevant for v4l2 controls used to create Camera properties, which are constructed using immutable video device properties, whose value won't change at runtime. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-02-14libcamera: properties: Add rotation propertyJacopo Mondi
The rotation property describes the rotation of the camera sensor. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-02-14libcamera: properties: Add location propertyJacopo Mondi
Re-use the Control generation infrastructure to generate libcamera properties and define the first 'Location' property. Introduce three additional files: - include/libcamera/property_ids.h Defines the properties ids - src/libcamera/property_ids.cpp Defines the properties Control<> instances - src/libcamera/property_ids.yaml Provide the first 'Location' property definition. Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-02-14libcamera: controls: Parse 'enum' in gen-controls.pyJacopo Mondi
In preparation to add libcamera Camera properties definitions by re-using the control generation framework, augment the gen_controls.py script to support parsing the 'enum' yaml tag and generate documentation and definition of possible values associated with a Control or a Property and defined through an enumeration of supported values. Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-02-14libcamera: thread: Support timeout in wait() functionLaurent Pinchart
Add a parameter to the Thread::wait() function to wait with a timeout. The delay value utils::duration::max() waits forever. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-02-14qcam: Provide save image functionalityKieran Bingham
Implement a save image button on the toolbar which will take a current viewfinder image and present the user with a QFileDialog to allow them to choose where to save the image. Utilise the QImageWriter to perform the output task. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-02-14qcam: Provide initial icon buttons "Play/Stop"Kieran Bingham
Provide Quit, Play, Stop icons. Create a Qt resource to compile icons into the binary and present them on the toolbar. Update the Quit button with a 'cross', and implement Play/Stop buttons. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-02-14qcam: assets: Provide initial icon setKieran Bingham
Provide simple clean icons from https://feathericons.com/ (https://github.com/feathericons/feather) These are provided under the MIT license. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-02-14qcam: Introduce a toolbar and camera switchingKieran Bingham
Implement a quit button, and a list of cameras. Selecting a different camera from the Toolbar will stop the current stream, and start streaming the chosen camera device if it can be acquired. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-02-14qcam: Store CameraManager as class memberKieran Bingham
Intialise a local copy of the CameraManager instance to ease access to the CameraManager which is frequently utilised. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>